How a CV Axle Works
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- Опубліковано 11 січ 2025
- Here's how a CV Axle works to turn your car's wheels.
The constant velocity axle links the rotational motion of the transmission to the hub and thus turns the car's wheels. Generally, CV axles are used on the front of FWD or AWD cars on vehicles with independent suspension.
The main advantage of the CV axle is that it allows for a very high degree of articulation, while still rotating its input and output shafts at the same speed. This is ideal for the front wheels which move up and down with the suspension, and turn sideways to steer.
The inner CV joint consists of a sliding tripod housing, that allows the axle to extend or contract. Inside, a carrier with needle bearings holds 3 rollers that allow for a small degree of swing. The carrier looks like a fidget spinner.
The outer CV joint does not telescope, however it has a very large degree of articulation, which is needed near the steering axis. It consists of an inner bearing race, a carrier, and the outer race or housing. the bearings are allowed to pivot about the central axis, but cannot rotate - allowing for constant rotation to be transferred from the input to output.
Rubber boots cover each CV joint and are typically packed with grease. Interestingly, the grease types appear different for each joint. Boot failure is the major cause of worn CV axles, once dirt enters the system and causes excessive wear.
This axle was disassembled from a 2001 Toyota Corolla and opened up to see what's inside and how it works.
To clean up grease messes, you can source Hanes underwear here (if you can't steal some):
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Link to Etsy shop where you can purchase speedkar99's brother's socks, t-shirts or hoodies:
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To clean up grease messes, you can source Hanes underwear here (if you can't steal some):
amzn.to/2xBqIGh (US)
amzn.to/2YxryzV (Canada)
Bro i can repair it easily i am mater
Good job!
That's heights of recycling/reuse..👍👍👍
And the next time you get mad at your brother, just put it back in his bureau without cleaning it.
This is the most advanced amazing marketing technique I’ve ever seen
No crazy introductory music, no life story, no side story, right to the point. Thank you.
That's my style
@@speedkar99 yessir and thats why you won me as a subscriber.
@@speedkar99 ily
Hahaha👍
And don't forget the underwear
I worked at CVJ manufacturer in Korea. He knows exact name of each part. And his explanation is perfect.
Thanks for a good video.
Thanks, good to be verified
ROK #1
well then can i be employed for a reasonable wages?
I just bought a Hyundai. Thanks for the parts!
It's crazy cuz I went into this video not knowing a single thing about what a CV axle is or why it's even called a CV axle and I learned much more than I asked for!!!
NO BULLSHIT, FAST TALK, SIMPLE WORDS, NO FILLER, QUIRKY JOKES, IN DEPTH BREAKDOWN??? this is one great video!!!
Thanks. That's my style 😏
@@speedkar99 keep up vids like this!
Yes, none of that, "Rev up your engines" stuff at the beginning! And a great disassembly too!
I really appreciate the right to the point way you made this. No stupid jokes or weird music. I've always wanted to know how the cv joint worked, now I know, thank you, Sir!
That's my style. Thanks
Perhaps the best, information-packed, no-fluff, well-explained how-to I've ever watched. Incredible work - thank you.
In a world full over over detailed prolonged youtube videos, you, sir, have done what alot of others need to do.Focus on the short attention span of the viewer. You don't over detail, its short precise and straight up. An awesome video. I will be subscribing and looking to you when i need an explanation on similar topics A+
+MAX ZEE I appreciate your kind comment, short and to the point is my style! Check out my other videos for more
exactly why he got 500k views!
that sums up my experience, big thank you.
Your videos are outstanding. I'm enjoying learning how things work by someone who has a good engineering knowledge. I haven't had the courage to dismantle a CV joint!
I love how you don't waste our time by being concise and to the point. Well done man...well done!
+Michael Smith Short and to the point is my style! Check out my channel for more!
Michael Smith I subscribed to your channel and I want to share my channel
Hear, hear!
Very nice tutorial. It amazes me how man is able to solve problems that make our daily lives better but on the other hand we are adept at screwing things us that adds to human misery. I'm 73 and still enjoy listening and learning. Thanks
I'm glad you appreciate learning
This, and your other videos are fantastic. Diving right in, tearing things apart to their most basic level, and thoroughly identifying each component as you go. Your brother should be proud that his undergarments have the honor of appearing in such high-quality demonstrations! Thank you!
Great explanation, no buggering around. Good job
Very ingenious design. If I was asked how they work before watching this video my explanation would have been waaaaaay off. Thanks for sharing!
I didn't know myself either until I opened up this CV
These videos really are a treasure. Great explanation and visuals while keeping it concise. Thanks for keeping these coming!
+CidH Thanks I am glad you enjoy them!
Once I heard “My Brothers Underwear” I immediately subscribed
+Jonathan Miot hahaha
Next week's video will feature some more 🎁
Stay tuned
lol
😂😂
Dont broke it if it ain't fixed
NIce video and instruction.
Thanks for this! It makes a lot more sense to see it live rather than pictures.
That was one of the most comprehensive and entertaining videos I've ever had the opportunity to witness! I truly enjoyed it! I'm hooked! Thank you!
I love your sense of humor and knowledge of terminology and workings of each peice. It's very impressive!
Haha I'm glad you enjoyed it
Very nice demo my friend, I love getting into the parts and seeing them component by component. The best way to understand their mechanisms. Nice editing to cut to the essential parts too so we don't waste our time watching you cut things or other dull stuff that's not very instructive. Keep up the good work.
+cosmicallyderived thanks. Short and to the point is my style. Check out the rest of my channel for more teardown videos.
cosmicallyderived I subscribed to your channel and I want to share my channel
Excellent video! To the point demonstration without wasting the end-user's time. Thanks a lot mate.
Yo man I just want to commend you on not only great quality content and no bs, but your diction is on point. No filler words. Correct terminology. Just professional work sprinkled with just the right amount of tasteful humor. Masterful work!
Glad you appreciate my videos
Thanks to your videos, I really appreciate driving my car much more since I am more aware of what is working to move it.
I sure have a different train of thought when I drive cars now too
with all this amazing info on youtube i feel like more people should take ownership of their cars and try DIY repairing. just a bit of reading/watching and a little bit of doing can go a long way. the initial investment in to a tool set can be daunting but is very worth it in the long run. thanks for the great content!
Awesome, and yes you are right
UA-cam gold right here.
+Shadow_AquilaX I wish
Shadow_AquilaX I subscribed to your channel and I want to share my channel
Possibly one of the most useful and simple automotive part designs to ever be introduced. A fresh of breath air from looking at the guts of an automatic transmission.
All your content gets right to the point with no bullshit. I also like the well-written write-ups. Great job!
Glad you appreciate it!
Your video was superb! It was concise and to the point. My CV joints are BAD!!! Crunching on turns! I drive 100 per day average. How long can this go on? Nobody has a straight answer, nobody shares tbeir knowledge with me. But you , you tell the secrets that men keep to themselves. You are awesome. Thank you.
You are welcome. Time to replace those CV joints
What a great concise explanation. Smart dude! I learned a lot here. Thanks man!
You are welcome
Wow I am impressed ! Very informative and concise video ! Quick, to the point, instructional and no stupid head banging music. This type of video sells, thanks for not just dragging the demonstration out to like 20 minutes long.
+tony mememe thanks I'm glad you appreciate my video style.
I don't think this type of video sells though...
Very well articulated explaination. Thanks for this lesson.
Just wanted to say thank you for this great in-depth explanation. I've had an issue with mine on a vehicle and then got curious on how they worked and this was exactly what I was looking for.
Great to hear!
Holy smokes great video! This guy definitely knows what he's talking about.
+Tony Pedroza thanks glad it helps
Hope this monetized because this guy deserves some cash flow for this deep of an explanation/demonstration
Thanks
Excellent video! Cuts out the crap, explains the good details, uses brother's underwear.
Five stars. ⭐⭐⭐⭐⭐
Thanks for the kind feedback!
Having mine replaced right now, not even that mad considering how cool the jointd turned out to be. Had one not gone bad I wouldn't have watched this awesome video. Blew my mind honestly haha thanks!
Great job keeping your videos unique. Old underwear makes great grease rags!
and your brother can put it back on when you're finished.
I would have used my own old underwear, I know what they been through. No telling where your brother's underwear has been...
Tripp M
Tripp M I subscribed to your channel and I want to share my channel
Stephen Clark I subscribed to your channel and I want to share my channel
Wow, this is an excellent lesson on the subject by a wonderful and professional teacher. You are the best in explaining the constant velocity (CV) concept. I owe you some tuition. An admirer from Seattle, Washington State
thanks for your wasting time very appreciate, this is the best video for CV Axel education
Your welcome
Such a complicated invention. Whoever invented must be extraordinary intelligent and creative. Without this video it would have been difficult to figure out for a common person like me. Thank you very much!
Very well made, informative and enjoyable. Thanks for the quality content ❤️👍😊
Your welcome
In the late-'70s and early-'80s when front wheel drive was a relative novelty the spider-geared CV joint was a wonder of its age. I still regard these CV joints as an engineering marvel. The relative cost of a complete axle replacement has come down over the decades. Back in '93 my wife's '88 Pontiac Bonneville needed a passenger-side CV joint replaced. I remember getting both replaced at the same time, citing false economy to just replace the obviously broken joint, and the service manager at the Sears Auto Service garage (Sears was at the top of their game back then) just about gave me a standing ovation for what she called my "foresight". I've only ever had to have CV joints replaced on an out-of-warranty vehicle one other time and both were replaced at the same time. Doing this job one's self can be a bear and at my age I don't think I'd care to give it a try now but it must feel very satisfying to complete this repair on one's own.
They are are a marvel....in fact there are so many parts that are taken for granted in the modern day car
@@speedkar99 No doubt about that. I regard the air conditioning system as a marvel too. Not that long ago A/C was still an option on many vehicles. I bought a 1980 Chevrolet Citation with a 4 speed manual transmission which didn't have A/C; it had a sticker price of just over $5300. I sweltered in the summer driving that vehicle with the black interior. That Citation was my first new vehicle and the _last_ I ever purchased _without_ A/C.
New subscriber here ✋
Great stuff!
Using your brother's stuff stil gets me every time 😂
+Hamza Raissouli thanks, wait until you see today's video...
As so many have already commented; great with so much information and knowledge in short time! Key is that you don't leave out information, a mistake many others do. Great video!
+Leif Enblom thanks. I try to put as much info in a short amount of time. To some its overwhelming, to others its brilliant if you can follow along!
It wasn't stuck. There's a snap ring that is recessed in the inner race and when you clean off the grease it reveals it. You need to use the snap ring pliers while tapping it off with a hammer.
I’ve watched a bunch of the videos on this channel…
His vocabulary gives away his level of education.
I’m guessing he has an engineering degree or similar
Nice work. Clear concise. Thank you.
+NumberOneWithACoke Thanks for the feedback
NumberOneWithACoke I subscribed to your channel and I want to share my channel
Excellent, thank you! Must say there is an understanding of rotational motion physics in the design of the components. Pretty cool.
A gente vive o dia-o-dia sem ser conta de quantos detalhes estão envolvidos nas coisas pra tornar nossas vidas mais fáceis.
Imteressante isso.
Great video. Much higher quality narration then the driveway workshop would have me expecting. Love the work.
Thanks. Yep I try to keep my work concise and sweet
When I lived in Alaska you had to "winterize" your lower 48 and put on high quality rubber CV boots that would not harden in the extreme cold.
Great Tutorial and in under 6 minutes at that, who else can do that. You really know your stuff, I can tell by your explanation of the CV Axle components.
+Joe De Jesus Thank you
I did a bit of research before tackling this
Very good pacing! I can see why you have a lot of subscribers!
+Cars Simplified Thanks, I keep my video short and to the point.
Cars Simplified I subscribed to your channel and I want to share my channel
Thank you. I will show this to my service technicians to prove to them that the power steering light and grinding noise when turning or making U-turns is caused by a worn out CV axle and CV joint
Ok
You make awesome videos.
+Blah Blah Glad you enjoy them!
Blah Blah I subscribed to your channel and I want to share my channel
One of the best vids I've seen on mechanical issues...
Glad you appreciate my work
I followed the video, but I couldn't re-assemble the CV Axle.
+Charles McCarthy How far did you get...grinding it open? Lol
did you use your brother's old underwear like he did in the video?
a Dammit. I knew I had missed something.
+a haha
Gotta use the right tools for the right job
At least now his brother's ball bearings will be well lubed when he returns the underwear.
This is like bullet points in video format. Great content
Brother: "I feel....funky..."
The thumbnail made it make so much sense immediately- it’s like a ball bearing with controlled play so the balls move along a track (except both parts rotate together not separately)
Yes....it's a ball joint that can carry torque
2:23 *So I'm just gonna use MY BROTHER'S UNDERWEAR HERE...* OMG had me rolling, totally random comment.
Of course....best to clean up grease
wow!!! Way you explain is really engaging, no side tracking. thanks man
Glad it was helpful!
Thank u man now I know what I have to do with my old underwears😁
Oh they are awesome for greasy situations
Thanks for the simple and straight forward explanation of the CV joint. Cheers!
Glad you enjoyed it
I did my cv axle last week, it's cool to see how they work thanks. also is it recommended to do both at the same time or as they are needed
+LFDS94 Great. Axles don't have to be replaced in pairs.
LFDS94 I subscribed to your channel and I want to share my channel
Wow, you are talented and can explain things as the best teacher. Subscribed!
Glad you appreciate it
Really wondering how much force these tiny metal parts can withstand which move such heavy wheels with all those burnouts. 🤔🙏
The small components are all in compression. They can take alot of loading, but eventually they do wear out.
I like the way he makes this very technical piece of equipment more enjoyable to learn about by constantly referencing his brother's underwear!
Thanks, it sure adds some character
Where's your brother toothbrush these days? Lol. Great video as always.
+charls seal see the last clip
+charls seal His underwear made an appearance this time
Hey I got to see it at the end.
charls seal bhhhhh
charls seal I subscribed to your channel and I want to share my channel
Wish all videos were like this, no BS, straight to the point! Thanks my friend
That's my style. Thank you
Your brother must be set to go shopping for new underwears regularly every time you make a car repair video.
Quite possibly the best video I've ever seen on UA-cam. Perfect explanation, no boring wasted moments in the video, and a little bit of humor. Subscribing! Keep up the great work bro!
Awesome. Check out my other videos
He grease his brothers drawers! 😂😂
+Eric Deshields yes so does he when he leaves his undies everywhere
Idk if you know but thats off boondock saints
Always love watching your vids. In Tech school right now, this video finally made something click for me. 😅😂
So the outter axle housing (cv side that goes to the hub) is attached to the rotating shaft by just those 6 ball bearings inside the cage? So the entire thing could come off while driving if you ignore the clicking for too long?
+mrsemifixit Yes its ts just held by the bearings. Remember that the axle in normal driving conditions only extends so far, its only if the axle is pulled straight that i t may pop out
speedkar99 I mean if the bearings or that cv housing wear out enough it couldn't separate from that shaft? I ask because mine has been clicking for a couple years lol
+mrsemifixit Yes it can separate. Then your car will be disabled, as the axle will turn without the wheel. The differential will take all power to that free spinning axle and your left going no where. Its a good idea to replace it soon.
If none of the boots are ripped, how can you determine which side is bad? I hear the clicking only when taking right turns
mrsemifixit
If you have aftermarket rims and tires on your car that are wider or bigger than stock, turning the wheel full lock can sometimes have the wheels rub up against the inner wheel well. I know this because my mustang has wider tires than stock and if I turn too hard it clicks.
An excellent presentation on CV Joints. There is a lot more to them than I imagined but your video makes short work of it. Thank you.
Thanks
Agreed...alot more that goes into the engineering of this overlooked part
Ok, but where can I buy a pair of your brother's old underwear?
+MrTeknotronic you don't have a brother do you?
speedkar99 Well, I have a sister. But it seems weird to use her old underwear to clean car parts.
MrTeknotronic wed
MrTeknotronic hahaha
MrTeknotronic I subscribed to your channel and I want to share my channel
Thank you for sharing this instructional video. I decided to learn to work on the cars myself after being taken by "mechanics" that should've watched your videos. You kept it simple & right to the point of how it works & what the part looked like taking apart & putting together. I will keep referring, pause, replay. Thank you again!
P.S.- Using your bro's "choni's" had me lmao😂😀😂😊...i
Glad my videos have inspired you
My brother's old underwear 😂😂😂
+Vaisakh V best for greasy situations
wonderful channel. your knowledge and the way of teaching made you a pure teacher of MACHINES.
If your brother ever hear this
Dude, great break down of the axel. I was wondering how it all works and being able to see the internal bearings puts it all into focus.
Glad it helped
gracias
subscribed. the complexity and ingenuity of the cv axle amazes me. how far we have come since the wagon wheel.
Agreed. Sure is complex for it's function
هاد المصلح من اصول حمصية.
والدليل. انو مسح الشحم بـ كلسون قديم 😉
It's incredible how old junk could be so educational
+Lucio Alvarez your right, there's a lot of potential in a junk car.
this video was tremendously informative. so cool to see what's going on inside that little boot. 1:58 was really cool
Your terminology is incredible
you have deep understanding of mechanics and greate explanation talent
Thanks. I learn by taking these things apart as I go
Really good presentation. Speaking fast yet very understood. Lovely. Wish all UA-cam video on how to were like this.
Thanks for a great video. A universal joint usually used on truck drive shafts to connect transmission to rear differential is not a constant velocity CV joint.
Yes
This dissection of the CV axle is incredibly well articulated and most educational. Thanks for taking the time to make the vid. Also, thanks for the tip on re-purposing old underwear.
very knowledgeable. he explained it perfectly that even an engineer can understand...
Hahaha ... Engineers are supposed to understand
One of the best auto tech videos I've ever seen. Excellent job. I've subscribed👍
Thanks for subscribing
Great video, now i understand what's happening inside CV joint, thanks a lot
+Jithin P V Thanks
Great video. Speaking of history, the US model Volkswagen Bettle from 1946 to 1979 had CV axles.
To the point and superbly detailed. Excellent job with the explanation. I am glad I saw the video and learnt lots about the design of the cv axle.
Thanks. Yes the CV sure is interesting!
Thank you for this tightly edited explanation
You are welcome
My good man you did an excellent presentation explaining a cv joint axle.
Thanks a lot...your video has been so informative and motivating..i have got many insights to the working of CV joints now...God bless and keep making such practical demonstrations.
+Jitendra Itankar thanks I'm glad you enjoyed it and learned from it